To be completely honest, I'm pretty certain it's stress and the thought of paying a 70.00 vet bill for a 15.00 budgie over nothing isn't something I've got the budget to do. If there were ANY other signs it would be a different story. I cleaned him up yesterday afternoon - making sure his vent was clear - and I've been keeping a very careful eye on him. He was a monkey to catch and fussed the entire time, which is a good thing. If he'd have just let me do it I'd have taken that as another bad sign. The little fids have been eating like piglets, both the millet I put into the cage to encourage them to eat and out of their regular food dish. After spending most of the morning right up in the corner by the light, he's now moved away and is chattering, checking out the toys when he's sure no one's watching and since the backside preening incident his vent has stayed clear. His poop was a little thick but is back to normal this morning - they had water in a massive dish and in the new cage it's across the cage from the food so they don't soak all of their seed and pellets, I think he just didn't know where it was at first. At no point in time has he been tail bobbing, overly fluffing, and his breathing rate has remained normal for the most part. They're still on the skittish side considering they moved from a massive hex tank with 25 odd babies in it to a tall wire cage with just one buddy for company.

Spending 20 minutes waiting for a budgie to drop a birdie bomb first thing in the morning was entertaining. I swear the little brat was holding it just because I was waiting. And I'm getting cheek fluffies and chirps back if I talk softly to them.
Kostia - the cobalt - is definately the more outgoing at this point. Kiril - the one with the vent issue - is much more cautious and not half as quick to succumb to flattery and pretty birds. I think he just took the move a lot harder, which is funny because the goofy blue got out of the box and had to be netted twice. Kiril got pinned in a corner and just froze - he didn't fight the net at all. I think he's going to end up being my "sensitive" one.